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Merging to release-5.8: Add a Note on the availability of ctx.GetSession(r) in the middleware chain (#6959) #7007

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Merged
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Oct 7, 2025
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Merging to release-5.8: Add a Note on the availability of ctx.GetSession(r) in the middleware chain (#6959) #7007

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7 changes: 7 additions & 0 deletions tyk-docs/content/api-management/plugins/golang.md
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Expand Up @@ -518,6 +518,13 @@ func MyPluginFunction(w http.ResponseWriter, r *http.Request) {
}
```

{{< note warning >}}
**Note**

Tyk Gateway sets the session in the [Authentication layer]({{< ref "api-management/traffic-transformation#request-middleware-chain" >}}) of the middleware chain. Because of this, the session object does not exist until the middleware chain runs after the authentication middleware. If you call `ctx.GetSession` inside a custom auth plugin, it will always return an empty object.

{{< /note >}}

The invocation of `ctx.GetSession(r)` returns an SessionState object.
The Go data structure can be found [here](https://github.com/TykTechnologies/tyk/blob/master/user/session.go#L106).

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